<style>
    /* 返回按钮样式 */
    .back-button {
        display: inline-flex;
        align-items: center;
        padding: 8px 16px;
        background: #1E9FFF;
        color: #fff;
        border-radius: 4px;
        cursor: pointer;
        margin-bottom: 20px;
        transition: all 0.3s;
        font-size: 14px;
        border: none;
        user-select: none;
    }

    .back-button:before {
        content: "←";
        margin-right: 8px;
        font-size: 16px;
    }

    .back-button:hover {
        background: #0d8aee;
    }

    @media screen and (max-width: 767px) {
        .back-button {
            padding: 6px 12px;
            font-size: 13px;
        }
    }
</style>


<!-- 返回按钮 -->
<div class="back-button" onclick="back()">返回上一页</div>

<script>
    function back() {
        window.history.back();
    }
</script>